python - 有没有办法在 Python 中保存 Stata 分类数据的值标签？

Question

所以我知道可以使用 convert_categoricals 参数读取 Stata 分类标签或值。

我一直在寻找一种将 pandas 数据框写入/导出到 Stata 并包含值标签的方法。但是我能找到的只是

data_label : str, optional 数据集标签

或

variable_labels : dict 用于列名标签，

但对于值(value)观本身没有任何意义。

Answer 1

这是对您问题的回答。这可能不是您所期望的，因为我使用的不是 pd.to_Stata，而是在 Stata 16 上开发的 Python 集成。

下面的代码必须在 Stata 中执行(从版本 16 开始)。简而言之，我正在生成一个 Pandas Data.Frame (df)，我将导出到 Stata。诀窍是使用来自 sfi 库的 ValueLabel.setLabelValue() 功能将标签应用于值。

clear all

python:
from sfi import ValueLabel, Data
import pandas as pd

data = [['Eren Jaeger', 15, 1, 'Soldier' ] , ['Mikasa Ackerman', 14, 1, 'Soldier'], ['Armin Arlert', 14, 1 , 'Soldier'],['Levi Ackerman', 30, 2, 'Captain']]  
#creating DataFrame
df = pd.DataFrame(data, columns = ['Name', 'Age', 'Rank_num', 'Rank'])

##              Name  Age  Rank_num     Rank
##0      Eren Jaeger   15         1  Soldier
##1  Mikasa Ackerman   14         1  Soldier
##2     Armin Arlert   14         1  Soldier
##3    Levi Ackerman   30         2  Captain


# Set number of observations in Stata
Data.setObsTotal(len(df))

#Create variables on Stata (from Python)
Data.addVarStr("Name",10)
Data.addVarDouble("Age")
Data.addVarInt("Rank_num")

#Store the content of "df" object from Python to Stata
Data.store("Name", None, df['Name'], None)
Data.store("Age", None, df['Age'], None)
Data.store("Rank_num", None, df['Rank_num'], None)

# HERE is where I solve your question!
# 1) Create the labels
ValueLabel.setLabelValue('rank_num_LABEL', 1, 'Soldier')
ValueLabel.setLabelValue('rank_num_LABEL', 2, 'Captain')
ValueLabel.getValueLabels('rank_num_LABEL')

# 2) Attach the labels to the created variable
#Attach the created label 
ValueLabel.setVarValueLabel('Rank_num', 'rank_num_LABEL')

end 

br

* At the end, you will see the following on the Stata browser
* Name              Age Rank_num
* Eren Jaeger       15  Soldier
* Mikasa Ackerman   14  Soldier
* Armin Arlert      14  Soldier
* Levi Ackerman     30  Captain

如果您想更好地理解上面代码背后的原因，这里是我用来学习它的引用资料。

1. Stata/Python integration part 9: Using the Stata Function Interfaceto copy data from Python to Stata
2. Stata/Python integration part 8: Using the Stata Function Interface to copy data from Stata toPython